Perspective drafting device



May 2, 1961 K. F. HARcl-nKov PERSPECTIVE DRAFTIYNG DEVICE 4 Sheets-Sheet1 Filed Sept NVENTH:

K F HARCH\KOV UOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOX @1% w1111111111o1 1111111m H1111111@ .w1111w M1111 w1w1m1111 1111111111111o1w11 N111 m H 11%11 m11111111111111v1m111111111111 11 wm H w1111111m M Hom m H1111111W1` May2, 1961 K. F. HARcHlKov PERSPECTIVE DRAFTING DEVICE 4 Sheets-Sheet 2Filed Sept. 22, 1958 INV ENTOR.

K.F. HARCHIKOV.

May 2, 1961 K. F, HARcHlKov PERSPECTIVE DRAFTING DEVICE 4 Sheets-Sheet 3Filed Sept. 22, 1958 FIG. I4

FIG. I3

May 2, 1961 K. F. HARcHlKov PERSPECTIVE DRAFTING DEVICE 4 Sheets-Sheet 4Filed Sept. 22, 1958 FIC-M8 FIGJ? FIG.I6

' guiding a pencil.

` United States Patent() ,"ice. f

2,982,021 PERSPECTIVE DRAWING DEVICE Konstantin F. Harchikov, 450Vermont St.,v Brooklyn 7, N.Y.

Filed Sept. 22, 1958, Ser. No. 762,373

3 Claims. (Cl. 33'-77) The present invention relates to a perspectivedrafting device. Its object is the provision of a device for drawing|views in perspective with the vanishing points in any position, themost important application of the device being in cases where thevanishing points do not fall on ythe drawing table.

The particular application of the device is the drawing of a perspectivesimultaneously with that of the construction, on enlargement from aprevious construction, or a perspective layout without a plan, elevationor section. This is applicable to different types of buildings,engineering constructions, numerous objects, details, etc.

In the accompanying drawings:

Figure 1 is a main elevation of the device of the present invention.

Figures 2 and 3 are side elevations of the device 4of the invention.

Figures 4 and 5 are longitudinal sectional views of the device of theinvention, the sections being along the lines 4 4 and 5 5 of Fig. 1looking in the direction of the arrows of said lines.

Figures 6, 7, 8, 9, 10, 11 and 12 are transverse sectional views of thedevice of the invention, the sections being .taken along the lines 6 6,7 7, 8 8, 9 9, 10 10, 11 11 and,12 12, respectively of Fig. 1, lookingin the direction ofthe arrows of said lines.

Figures 13, 14 and 15 illustrate the use of the invention for operationabove the line of horizon.

Figures 16, 17, and 18 illustrate the use of the invention for operationbelow line of horizon.

The perspective drawing device of the present invention includes twotwo-layered straight edges 1 and 6, similar in arrangement and alikeexternally (Figs. 1, 7 and 8), having upper members 2 and 6 fastened byscrews 4. I'he straight edge 6 has a slot 7, which is used yfor The slot7 is particularly useful for drawing lines with the straight edge 6 whenthe device is used for operations below the line of horizon. Thestraight edges 1 and 6 have channels or grooves (Figs. 7 and 8) whichface each other and which serve to direct pins moving along the channelsin a lengthwise direction (Figs. 4, 9 and 10).

'Ihe perspectve drafting device is provided with a mechanism connectingthe two sets of straight edges and consisting of two identical adjustingbars 9 having holes 10 located 'in the center and along their entirelength (Figs. 1 and 5). The ends of the adjusting bars 9 are of an ovalshape and carry the pins 5, which slide in the channels of both straightedges (Figures 9 and 10).

A special rivet 3 can be inserted into any two superposed holes 10 ofthe adjusting bars 9, and serves to effeet the operation of theperspective drafting device (Figures 1, 3 and 5).

The operation of the device is as follows:

Edge 1 of the perspective drafting device is placed on the line ofhorizon H H of the drawing to be made, as indicated by full lines inFigs. 13 to 15. The other edge 6 is attached by tape 11 tothe underlyingsheet of l Patented May 2, 1961 drawing below the line The device can beoperated by inserting the special rivet 3 into any two superposed holes'10 ofthe adjusting bars 9.

The location of special rivet 3 in the center holes 10 (Fig. 13)provides a shifting of the straight edge 1 Vhori- "'1 zontally'in anupward direction, and with a triangle vertical lines C C are obtained.

The location of special rivet 3 in any of the holes 1 to on the righthand side (Fig. 14) provides a shifting of the straight edge 1 upwardlyfrom the line of horizon H-H at a variable angle. This provides lines CC for a right hand vanishing point.

The location of special rivet 3 in any of the holes 1 to 85 on the lefthand side (Fig. 15) provides a shifting of the straight edge 1 upwardlyfrom the line of horizon H H at a variable angle. This provides lines CC for a left hand vanishing point.

For perspectives below the line of horizon H H, the slot 7 of thestraight edge 6 is placed on the line of horizon H H while the straightedge 1 is taped by the tape 11 above the line of horizon H H (Figs. 16to 18).

The location of special rivet 3 in the center holesV 10 (Fig. 16)provides a shifting of the straight edge 6 in a downward direction, andwith a triangle vertical lines C C are obtained.

The location of special rivet 3 in any of the holes 1 to 85 on the lefthand side (Fig. 17) provides a shifting of the straight edge 6 and slot'7' downwardly from the line of horizon H H at a variable angle. 'I'hisprovides lines C C for a left hand vanishing point.

'Ihe location of special rivet 3 in any of the holes 1 to `85 on theright hand side (Fig. 18) provides a shifting of the straight edge 6 andslot 7 downwardly from the line of horizon H H at a variable angle. Thisprovides lines C C for a right hand vanishing point.

I claim: y

1. A perspective drafting device, comprising lrst and second straightedges each straight edge having a longitudinally extending groove,rlirstand second elongated adjusting bars crossing each other and located indifferent planes, said irst bar having a pin on one end slidably locatedin the longitudinal groove of said iirst straight edge close to one endof said iirst straight edge, a pin on the other end of said rst barslidably located in the longitudinal groove of said second straight edgeclose to an opposite end of said second straight edge, said second barhaving a pin on one end slidably located in the longitudinal grooves,lirst and second elongated adjustto one end of said second straight edgeand a pin on the other end of said second bar slidably located in thelongi- -tudnal groove of said rst straight edge close to an opposite endof said iirst straight edge, each of said bars having a longitudinal rowof holes, the rows of holes of the two bars being uniformly disposed andbeing adapted to be brought into alinement, and a rivet removablylitting into any two alined holes of said rows of holes.

2. A perspective drafting device, comprising rst and second straightedges, each of said straight edges having upper and lower members andscrews interconnecting said members, the t-wo straight edges havingopposed longitudinally grooves, first and second elongated adjustingbars crossing each other located in dilerent planes and having o'valends, a pin carried by one end of said rst bar and slidable in thelongitudinal groove of said first straight edge close to one end of saidfirst straight edge, another -pin carried by the opposite end of saidiirst bar and slidable in the longitudinal groove of said secondstraight edge close to one end of said second straight edge, a third pincarried by one end of said second bar and slidable in the longitudinalgroove of said iirst straight edge close to the opposite end of saidirst straight edge, a fourth pin carried by the opposite end 2,982,027 3Y 4 of sad second bar and slidable in the longitudinal groove ablyfixing ythe position of any one of said straight edges of V said secondstraightedge close to the opposite end of upon said sheet. said secondstraight edge, each of said bars having a longitudinal row of holes, therows of holes of the two References Cited in the me 0f hls lfa'felltbars ibeingunifor'mly disposed and being adapted to be 5 UNITED STATESPATENTS brought 'into alinement, and a rivet removably tting into anytwo alined holes of-said rows of holes. t 644,184 McMullen Feb. 27, 1900V3..A perspective drafting device in accordance with 1,357,462 Lund Nov.2, 1920 claim 2, jfor use upon an underlying sheet'of'drawing, 2,484,361Upton Oct. 11, 1949 said deviceincluding a connecting member Ifor remov-10

